For the J2SE5 metamodel, it has been replaced by JAVA metamodel, and all related components have been updated
(essentially use cases).
Those three components are now located in <SVN>/deprecated/plugins:
1. org.eclipse.gmt.modisco.j2se5
2. org.eclipse.gmt.modisco.j2se5.browser.extension
3. org.eclipse.gmt.modisco.j2se5.discoverer

For the C# metamodel, because we still don't have open source parser available and the metamodel need to be updated,
those three components are now located in <SVN>/incubation/trunk:
1. org.eclipse.gmt.modisco.csharp
2. org.eclipse.gmt.modisco.csharp.browser.extension
3. org.eclipse.gmt.modisco.csharp.discoverer